package com.wpan.gulimall.product.exception;

import com.wpan.common.exception.BizCodeEnume;
import com.wpan.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.HashMap;
import java.util.Map;

/*
    集中处理所有异常
    @ControllerAdvice
        统一处理异常
        basePackages 处理异常的范围
    @RestControllerAdvice = @ResponseBody + @ControllerAdvice
 */
@Slf4j
//@ResponseBody
//@ControllerAdvice(basePackages = "com.wpan.gulimall.product.controller")
@RestControllerAdvice(basePackages = "com.wpan.gulimall.product.controller")
public class GulimallExceptionControllerAdvice {

    /*
        @ExceptionHandler
            告诉SpringMVC这个集中的方法可以处理什么异常
        处理所有数据效验的异常
     */
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public R handleVaildException(MethodArgumentNotValidException e){
        log.error("数据效验出现问题:{},异常类型:{}",e.getMessage(),e.getClass());
        BindingResult bindingResult = e.getBindingResult();
        Map<String,String> errorMap = new HashMap<String,String>();
        bindingResult.getFieldErrors().forEach((fieldError) -> {
           errorMap.put(fieldError.getField(),fieldError.getDefaultMessage());
        });
        return R.error(BizCodeEnume.VAILD_EXCEPTION.getCode(),BizCodeEnume.VAILD_EXCEPTION.getMsg()).put("data",errorMap);
    }

    /**
     * 当其他的异常没有指定的时候就直接进这个类
     * @param throwable
     * @return
     */
    @ExceptionHandler(value = Throwable.class)
    public R handleException(Throwable throwable){
        return R.error(BizCodeEnume.UNKNOW_EXCEPTION.getCode(),BizCodeEnume.UNKNOW_EXCEPTION.getMsg());
    }
}
